Revolver or semi? I'm about 90% sure I want to go with a revolver just because of my inexperience.

This is the exact reason to NOT get a revolver. Whatever you do, do not attempt to learn to shoot with a small revolver. What you should get is some training. Start with NRA Basic Pistol (it's a safety class with some shooting). You may wish to take a few private lessons before moving on to a two day defensive pistol course.

The reason is revolvers are more difficult to shoot. You will need more time to learn trigger control. After that, you'll need to learn to manage the recoil for rapid fire. Keeping the rounds on target is more difficult than with a semi-automatic handgun. If you're up to the challenge, then buy a revolver with at least a four inch barrel. I found that a gun with a five inch barrel is easier to shoot, especially during rapid fire.